隨著科技的快速進步，在端對端的系統當中，資訊安全成為現今備受關注且根本需要解決的議題。開放性無線接取網路聯盟之測試與集成焦點組提出開放性無線接取網路之端對端測試規格\cite{O-RAN_E2E_Spec}，該規格中定義了各式各樣地資訊安全測試。在本篇論文中，我們根據開放性無線接取網路之端對端測試規格，章節7.2.2\cite{O-RAN_E2E_Spec}，開發一套用於進行控制平面阻斷服務攻擊之工具。除了控制平面阻斷服務攻擊之工具開發，我們還分析此攻擊工具之最低硬體需求以及我們建立一套分佈式單元和無線電單元的測試平台用於驗證該攻擊工具所帶來之影響。

With the rapid growth of technology, security nowadays becomes a hot topic and the fundamental basis of the end-to-end (E2E) system. The open radio access network (O-RAN) E2E test specification \cite{O-RAN_E2E_Spec} drafted by the Test and Integration Focus Group (TIFG), proposes a variety of security testing. In this paper, we develop a software tool to conduct the control plane (C-Plane) denial-of-service (DoS) attack test as specified in Section 7.2.2 of the O-RAN E2E test specification \cite{O-RAN_E2E_Spec}. In addition to the development of the software tool, we analyze the lowest hardware requirements of it and build up a distributed unit and radio unit (DU-RU) testbed to verify the effectiveness of the tool.

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